87681283 has 4 divisors (see below), whose sum is σ = 88737768. Its totient is φ = 86624800.

The previous prime is 87681281. The next prime is 87681301. The reversal of 87681283 is 38218678.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87681283 - 2¹ = 87681281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87681281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 528118 + ... + 528283.

It is an arithmetic number, because the mean of its divisors is an integer number (22184442).

Almost surely, 2^87681283 is an apocalyptic number.

87681283 is a gapful number since it is divisible by the number (83) formed by its first and last digit.

87681283 is a deficient number, since it is larger than the sum of its proper divisors (1056485).

87681283 is a wasteful number, since it uses less digits than its factorization.

87681283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056484.

The product of its digits is 129024, while the sum is 43.

The square root of 87681283 is about 9363.8284371298. The cubic root of 87681283 is about 444.2583834776.

The spelling of 87681283 in words is "eighty-seven million, six hundred eighty-one thousand, two hundred eighty-three".